1、Union internationale des tlcommunications Place des Nations 1211 GENVE 20 Suisse Switzerland Suiza COVERING NOTE GENERAL SECRETARIAT INTERNATIONAL TELECOMMUNICATION UNION Subject: ERRATUM No. 1 Geneva, 1 August 2000 Recommendation ITU-T G.961 (03/93) TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU I
2、TU-T Recommendation G.961 (03/93) Digital transmission system on metallic local lines for ISDN basic rate access Replace Figure II.15/G.961 by the following: 20 dB/decade20 dB/decadeFrequency (Hz)Longitudinalbalance (dB)Figure II.15/G.961 Minimum longitudinal balance requirementT1317710-0060402001 10 100 1000 10 000 100 000 1 000 00055 dB5 Hz281.2 Hz 40 000 Hz
